The "Questions without Answers" compiled in this lexicon originate from my writings. They are, in a sense, self-cited questions. These are all the sentences, thoughts, words, and word combinations that have received a question mark at the end in my books. Therefore, it is about more than a mere collection of anonymous inquiries. Even through the questions that have been extracted from the contexts in my books, seekers can get to know me better. I believe that those who ask questions do not go astray. The secrets of the questioner seem to be revealed through their inquiries. Questions are like naturalization tests for candidate checkers. Questions are world testers and sources of information. My questions are sorted in the lexicon according to their chronological order, that is, their appearances during the actions, narratives, and conversations in my writings. In the end, one may even be able to recognize the meaning of a story, even though no answers are provided. Reinhard Ost.